As far as I have read (not much, I admit) none of the “devices” was viable or even contained an explosive. But that is not the issue as Cesar Altieri Sayoc was not a prohibited person even though he had a LONG list of felony arrests. I don’t think he even spent misdemeanor jail time. If you go over The Gun Writer, you can read all the charges dating back to 1,991 in (where else) Broward County. I did a search in Florida’s Department of Corrections’ database and it came out bupkis. Sayoc got either adjudication withheld or nollo prosed time and time again which probably will be blamed on Trump or the NRA. .